反应详情

1.06 g (7.7 mmol) of 3-trifluoromethyl-1H-triazol, 1.38 g (6.5 mmol) of 4-chloro-2-n-propylthiobenzonitrile and 1.07 g (7.7 mmol) of potassium carbonate were stirred in 10 ml of N,N-dimethylformamide at 150° C. for 2 hours. The resulting reaction mixture was cooled to the room temperature and poured into 100 ml of water, and the organic matters were extracted with 50 ml of ethyl acetate twice. The ethyl acetate layers were combined, then washed with 50 ml of water twice and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. Purification of the residue by silica gel column chromatography afforded 0.78 g of 2-propylthio-4-(3-trifluoromethyl-1H-triazolyl)benzonitrile. (yield 38.2%) as a milk-white powder (m.p. 143-144° C.).

1. customThe resulting reaction mixture
2. extractionthe organic matters were extracted with 50 ml of ethyl acetate twice
3. washwashed with 50 ml of water twice
4. dry with materialdried over anhydrous magnesium sulfate
5. distillationthe solvent was distilled off under reduced pressure
6. customPurification of the residue by silica gel column chromatography